93AC

What the Code Means

Code 93AC sets when resistance in the driver airbag stage 2 circuit is too high. The control module continuously measures the resistance of the firing circuit: a value above the allowed range is read as an open circuit or a bad contact, and the system disables that stage.

Typical causes are a faulty clock spring in the steering column, damaged wiring, or connector problems in the circuit. This fault is essentially the same as 93AB, but for stage 2.

Symptoms

• The airbag warning light is on in the instrument cluster.
• The driver airbag may fail to deploy in a crash.

Diagnosis and Repair

1. Check the clock spring and the stage 2 circuit wiring, including the condition of the connectors and contacts.
2. If a fault is found, replace the clock spring.
3. Replace the driver airbag module if the fault is not resolved by the previous steps.
4. Clear the fault codes and confirm the light does not come back on.

Secondary Issues

• Risk of the driver airbag failing to deploy in a crash — the fault directly reduces driver protection.
• Steering wheel problems typical of a faulty clock spring (as with code 93AB).

Severity is critical: the fault affects the passive safety system, and driving the car with this error is not recommended.